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Gamophyceae: Zygnematales: Desmidiaceae or Closteriaceae

Closterium dianae
var. minus Hieronymus 1895

Species [ var. dianae ]: Cell body slightly curved, tapered toward both ends, truncated with slanted edges, small pores present at outside of both termini, inner side at center slightly convex, 150-380 μm long, 15-40 μm wide, L/W = 10-12; cell wall smooth; chloroplasts with 5-8 pyrenoids in each chloroplast (Illustrations of The Japanese Fresh-water Algae, 1977).
Cell body 160-323 μm long, 20-28 μm wide, L/W=8.3-12; chloroplasts with about 6 laminae; semicells with 4-8 pyrenoids (Photomicrographs of the Freshwater Algae, vol. 6, 1987).
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var. minus : Smaller than var. dianae; -150 x -15 μm;
Closterium dianae
v. minus
125,138 x 12-13 μm
Sukawa highland
Kurikoma mountain
Akita, 2005
Closterium
v. minus
130 x 11 μm
Iroha-numa
Zao mountain
Yamagata, 2005
Closterium
v. minus
122-137 x μm
Iroha-numa
Zao mountain
Yamagata, 2006
Closterium dianae
v. minus
or C. calosporum ?
115 x 13 μm
L/W=8.8
near Akai wetland
Aizuwakamatsu
Fukushima, 2005
Closterium
v. minus
or C. calosporum ?
110 x 9 μm
L/W=12.2
Aizu Recreation p.
Aizuwakamatsu
Fukushima, 2005
Closterium dianae
v. minus
or C. tumidulum ?
125 x 16 μm
Senuki
Nasu
Tochigi, 2004
Closterium
v. minus
or v. brevius ?
125 x 19 μm
Numappara marsh
Kuroiso
Tochigi, 2003
Closterium dianae
v. minus
122 x 11 μm
Numappara marsh
Nasu-shiobara
Tochigi, 2007
Closterium dianae
v. minus
100 x 11 μm
Senjo-ga-hara
Nikko
Tochigi, 2003
Closterium cynthia
v. minus
110,118 x 12 μm
Hazama marsh
Ashikaga
Tochigi, 2006
Closterium dianae
v. minus
or C. calosporum ?
116 x 11 μm
Omine-numa
Tsukiyono
Gunma, 2003
Closterium dianae
v. minus
or C. calosporum ?
116 x 11 μm
Omine-numa 6
Minakami
Gunma, 2007
Closterium
v. minus
144 x 13 μm
L/W=11.1
Numa-no-hara m.
Madarao highland
Niigata, 2006
Closterium dianae
v. minus
128 x 11 μm
L/W=11.6
Imori pond
Myoko highland
Niigata, 2004
Closterium dianae
v. minus
145 x 10 μm
L/W=14.5
Karakemi marsh
Omachi
Nagano, 2006
Closterium
v. minus
133 x 11 μm
L/W=12.1
Maimeno-ike
Norikura highland
Nagano, 2006
Closterium dianae
v. minus
or C. calosporum ?
133 x 10 μm
L/W=13.3
Ichinose-enchi
Norikura highland
Nagano, 2005
Closterium dianae
v. minus
or C. calosporum ?
105 x 10 μm
L/W=10.3
Ichinose-enchi
Norikura highland
Nagano, 2006
Closterium
v. minus
or C. calosporum ?
120 x 11.5 μm
L/W=10.4
Mi-ike 3
Norikura highland
Nagano, 2007
Closterium
v. minus
153 x 11 μm
L/W=13.9
Mi-ike 2
Norikura highland
Nagano, 2007
Closterium dianae
v. minus
133 x 12.5 μm
142 x 13 μm
Kodanuki marsh
Fujinomiya
Shizuoka, 2006
Closterium dianae
v. minus ?
or C. calosporum ?
140 x 12 μm
Imou marsh
Toyohashi
Aichi, 2006
Closterium dianae
v. minus
104 x 11 μm
Omotsubo m.1
Niimi
Okayama, 2006
Closterium dianae
v. minus
or C. calosporum ?
117 x 11 μm
Koigakubo marsh
Tessei-cho
Okayama, 2004
Similar species -->> C. venus ( < 85 μm ); C. calosporum; C. parvulum; C. leibleinii; C. moniliferum;

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Closterium dianae
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